Hydraulic elevator.



Patented June 19, 1917.

2 SHEETSSHEET I.

APPLICATION FILED OCT-7,1916. 1,230,547.

INVENTOR.

e w M 6 2 6.- fi HHHHM J & hiuufinnnfi y a 9 m M m m .w 5 T i- S m lllllLu m r 4! w 5 u WITNESSES 7 M BY :1. vAsmuc GEORGE r. WEBB, on HAMILTON, ONTARIO, CANADA.

HYDRAULIC ELEVATOR.

Specification of Letters Patent. I Patented J 11113 19, 1917,

Application filed October 7, 1916. Serial No. 124,428.

To. all whom it may concern:

Be it known that I, GEORGE F. WEBB, a subject of the King of Great Britain, residing at Hamilton, in the county of Wentworth and Province of Ontario, Canada, have invented a new and useful Hydraulic Elevator, of which the following is a specification.

My invention relates to improvements in hydraulic elevators, in which two elevator cars running on parallel tracks and attached to the ends of separate cables, are adapted to move simultaneously, and in opposite directions.

The objects of my improvements are, first, to provide means for using the same water repeatedly in the operations, second, to provide hydraulic means, together with a system of cables connected therewith, to lift or to lower cars on an incline railway or vertical tracks or guides, third, to provide means for holding supply water under pressure, fourth, to afford means for receiving the waste water from the hydraulic cylinder to be utilized in repeated operations.

I attain the objects by the mechanism illustrated in the accompanying drawing, in which Figure 1 is an elevation of the hydraulic elevator, showing one car at its highest station, and the other car at its lowest station.

Fig. 2 is a side elevation showing the hydraulic cylinder and piston together with the system of pulleys and cables connected thereto, and with stationary base bearings, and

Fig. 3 is a plan of the system of cables and pulleys connectedto the rigid base.

Similar characters of reference refer to similar parts throughout the several views.

In the drawing, A is a common motor, B is a water pump connected therewith by the piston rod C, and adapted to draw Water through the pipe D, and at the same time to force it through the pipe E. The above indicated parts are not new. Y

2 is the water tank, or receiver, of suitable size and location, and communicates with the pump B by means of the water conveying pipe D. 3 is an accumulator or tank to hold water under pressure, and which is suitably located.

The pipe E is connected to a lower part of the accumulator 3, and the opposite end of the said pipe, to the pump B. 5 is an automatic valve on the pipe E, for the purpose of allowing the water to be forced in to the accumulator, but not to return. 4 is a weight fitting snugly into the bore of the accumulator, and adapted to rise and fall with the water, at the same time bearing weight on the water.

13 is the stationary cylinder provided with a piston rod 6, adapted to rise and fall in said cylinder by means of hydraulic pres sure alternately from each end of the cylinder.

7 is a four-way valve connected to the upper end of the cylinder 13 by means of the pipe 8, and to the lower end of the cylinder 13 by means of the pipe 9, and to the water accumulator by means of the pipe 10, and to the water receiver by means of the pipe 12.

14 is one of the elevator cars, operated on a vertical or inclined railway, or, tracks or guides 15, shown in the drawing at its low est station, and is attached to one end of the cable 16. This cable is designated in the drawing by a double line having alternative black and white spaces.

The opposite end of the said cable is secured to the cylinder 18 is the other elevator car operated on similar tracks 19, shown in the drawing at its highest station, and is attached to one end of the cable 20. This cable is designated in the drawing by a solid black line,

and-the opposite end of the same is secured to the upper portion of the piston rod 6 at 21.

22 and 23 are the stationary base bearings provided with journals 24, 25, 26 and 27. The cable pulleys 28 and 29 rotate in opposite directions on the journal 25, the cable pulley 30 rotates on the journal 24:,the cable pulley 31 rotates on the journal 26, and I the cable pulleys 32 and 33'rotate on-the journal 27. j

The lower part of the cylinder '13 is provided with bearings 34 extending therefrom and rigid therewith. The said bearings support the cable pulleys 35 and 36, and allow each said pulley to rotate in either direction. Theouter end of the piston rod 6 is forkshaped to answer for bearings for the cable pulleys 37, 30, 39 and i0, and allows each said pulley to rotate in either direction.

The operation of the hydraulic system is as follows- The pump B pumps the water from the water receiver 2, through the pipes l) and i and into the accumulator 3.

The water is thence forced by means of the weight 4t, through the pipe 10, thence through the four- Way valve 7, thence through the pipe 9, and into the lower part of the cylinder 13 below the piston head, thereby forcing the piston (3 upward, increasing the distance between the pulleys 3! and 38km the iiston l3, and the pulleys 35 and 36 of the linder 13, and decreasing the distance between the pulleys 3!) and 10 on the piston 6, and the pulleys 32 and 33 on the base 2. -3.

At the same time the waste water in the cylinder 13, is forced by the rising of the piston 6, through the pipe 8, thence through the fourway valve 7, thence through the pipe 12 and into the water receiver 2, thereby utilizing the same water again in the operation.

lVhen the piston b is being raised by hydraulic pressure, the lower car 14: in the drawing, proceeds upward, the cable 16 attached thereto passing upward and over the pulley 31, thence over the pulley 29, thence over the pulley 36 on the lower end of the cylinder, thence over the pulley 38 on the piston rod 6, thence over the pulley 35 of the cylinder 13, thence over the pulley 37 of the piston rod 6 where it is then rigidly secured to the cylinder 13 at 17.

At the same time the cable 20, which is rigidly secured to the piston rod 6 and 21, passes upward and over the pulleys on the base thence over the pulley 10 on the piston rod thence over the pulley of the base 28, thence over pulley 39 of the piston rod 6, thence over pulley 28 of the base thence over pulley 30 of the base 22, where it is attached to the upper car 18, in the drawing, which is proceeding downward.

hen the car 18, shown in the drawing at its upper destination, has reached its lower destination, and the other car H has reached its upper destination, the piston rod 6 is at its uppermost point.

Then by manipulation of the four-way valve 7, the water from the accumulator 3', under pressure, through the pipe 10, passes through the said valve, through the pipe 8, and into the cylinder 13, forcing the piston downward, thereby bringing the cars again to the position shown in the drawing, and forcing the waste water which is below the piston head, through the pipes 12 and 9, and the valve 7, into the water receiver 2.

Increasing the number of cable pulleys on the cylinder, and likewise the same increase of pulleys on the piston, and the bas 23, would. allow a greater distance of travel or lift to the cars.

(ompressed air or live steam, admitted to the cylinder 13, in lieu of hydraulic,

power, to propel the piston in the cylinder in opposite directions, would accomplish the purpose intended, that is, to simultaneously propel the cars in opposite directions, as set forth.

Various changes in the forms, locations, proportions and a rrangen'ients of the several parts set forth, are possible without departing from the spirit and scope of the invention.

What 1 claim and desire to secure by Let ters latent is- 1. in an elevator, a cylinder, a piston rod and head in the cylinder, a plurality of loose pulleys journaled to the outer end of the piston rod, a plurality of similar pulleys journaled to said piston rod intermediate of the formerly mentioned pulleys and the cylinder, a plurality of similar pulleys jour naled to the opposite end of the cylinder, a base, a plurality of loose pulleys centrally journaled to said base, two loose pulleys journaled to said base one on each side of the said central pulleys, parallel guides, a car on each guide, said cars adapted to operate simultaneously in opposite directions, a cable, one end attached to one of said cars and the opposite end to the cylinder, the intermediate portion thereof woven around the pulleys on the lower end of the cylinder, the intermediate pulleys on the piston rod, one of the central pulleys and one of the side pulleys on said base, a plurality of loose pulleys journaled on a base intermedi ate of the former base and the piston rod, another cable, one end attached to the other car and the opposite end to the piston rod, the intermediate portion thereof woven around the end pulleys on the piston rod, the pulleys on the latter base, and one of the central. pulleys and one of the side pulleys on the former base, and means admitted to the cylinder to propel the piston rod in opposite directions for the purpose set forth.

2. In an elevator, a cylinder, a piston rod and head in the cylinder, a plurality of loose pulleys journaled to the outer end of the piston rod, a plurality of similar pulleys journaled to said piston rod intermediate of the formerly mentioned pulleys and the cylinder, a ydurality of similar pulleys journaled to the opposite end of the cylinder, a base, a plurality of loose pulleys journaled to said base, cars adapted to operate simultaneously in opposite directions, a cable, one end attached to one of said cars and the opposite end to the cylinder, the intermediate portion thereof woven around the pulleys on the lower end of the cylinder, the intermediate pulleys on the piston rod and one of the pulleys on said base, a plurality of loose the former base, and means admitted to the pulleys journaled on a base intermediate of cylinder to propel the piston rod in opposite 10 the former base and the piston rod, another directions for the purpose specified.

cable, one end attached to the other car and Hamilton, Ontario, October 5th, 1916.

the opposite end to the piston rod, the inter- GEORGE F. WEBB. mediate portion thereof Woven around the Signed in the presence of end pulleys on the piston rod, the pulleys H. G. HENDRY,

on the latter base, and one of the pulleys on F. S. DEWEY.

Copies of this patent they be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

